Itchy throat and cough are not necessarily precursors of lung cancer, but are likely to be caused by diseases such as cough variant asthma, acute and chronic pharyngitis, bronchitis or pneumonia. Lung cancer may present with local symptoms such as cough, itchy throat, blood in sputum or hemoptysis, chest pain, chest tightness, shortness of breath, hoarseness, etc. The cough is paroxysmal irritating dry cough, which is often not easily controlled by general cough medicine. Besides lung cancer, other respiratory system diseases such as upper respiratory tract infection, acute and chronic pharyngitis or bronchitis, pneumonia, tuberculosis, etc., can also cause itchy throat and cough to different degrees, so itchy throat and cough are not necessarily precursors of lung cancer. If lung cancer is suspected, the diagnosis can be confirmed by X-ray, bronchoscopy, cytology and other related examinations to clarify the diagnosis. After the examination and clear that it is lung cancer, patients should actively cooperate with doctors for chemotherapy, radiotherapy, surgery and other treatments. In life, they should avoid smoking and consume more vegetables and fruits to supplement nutrition and improve their immunity.